49539797 has 2 divisors, whose sum is σ = 49539798. Its totient is φ = 49539796.

The previous prime is 49539773. The next prime is 49539811. The reversal of 49539797 is 79793594.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33651601 + 15888196 = 5801^2 + 3986^2 .

It is a cyclic number.

It is not a de Polignac number, because 49539797 - 2⁸ = 49539541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49539727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24769898 + 24769899.

It is an arithmetic number, because the mean of its divisors is an integer number (24769899).

Almost surely, 2^49539797 is an apocalyptic number.

It is an amenable number.

49539797 is a deficient number, since it is larger than the sum of its proper divisors (1).

49539797 is an equidigital number, since it uses as much as digits as its factorization.

49539797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2143260, while the sum is 53.

The square root of 49539797 is about 7038.4513211359. The cubic root of 49539797 is about 367.2693961056.

The spelling of 49539797 in words is "forty-nine million, five hundred thirty-nine thousand, seven hundred ninety-seven".